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Claude 4.5 Opus’ Soul Document

Claude 4.5 Opus’ Soul Document

Richard Weiss managed to get Claude 4.5 Opus to spit out this 14,000 token document which Claude called the “Soul overview”. Richard says: While extracting Claude 4.5 Opus’ system message …

https://simonwillison.net/2025/Dec/2/claude-soul-document/

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